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Excitation and structure of hypernuclear resonances in (K −,π ¯0)-reactions on 1p-shell nuclei

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The available experimental data on the excitation functions (EF) of the 1p-shellΛ-hy-pernuclei in (K −, π−) reactions atθ π = 0° has been analysed in terms of shell model and weak coupling scheme. It is substantiated by the experimental data on the neutron spectroscopic factors and on the fragmentation of nuclear hole excitations. The pronounced nuclear spectroscopic characteristics in the hypernuclear spectra are indicative of a weak coupling ofΛ-hyperon with nuclear subsystem. The analysis has made it possible to determine the difference is single-particle energies ofΛ-hyperon in the 1p- and 1s-states and to obtain additional evidence for the smallness of theΛ-nucleus spin-orbit interaction. The resonance structure of EF of hypernuclei, which were not studied in (K −,π −0 ) reactions, is predicted. The interrelated aspects of the studies of the (K −,π −0 ), (K −,π −0 β′), and (K −, π+) reactions which are of interest to spectroscopy ofΛ-andΣ-hypernuclei are discussed.

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Authors and Affiliations

  1. P. N. Lebedev Physical Institute of the USSR Academy of Sciences, Moscow, USSR

    V. N. Fetisov

  2. Nuclear Physics Institute, Czechoslovak Academy of Sciences, Rez, Czechoslovakia

    L. Majling & J. Žofka

  3. Nuclear Research Institute of the USSR Academy of Sciences, Moscow, USSR

    R. A. Eramzhyan

Authors
  1. V. N. Fetisov
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  2. L. Majling
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  3. J. Žofka
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  4. R. A. Eramzhyan
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Additional information

The material presented in this study was partly reported in brief at Heidelberg HF & K Conference, 1982. We are indebted to Profs. B. Povh, A. Gal, M. Gmitro, M. Sotona, and M. May for informative discussions.

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Fetisov, V.N., Majling, L., Žofka, J. et al. Excitation and structure of hypernuclear resonances in (K −,π ¯0)-reactions on 1p-shell nuclei. Z Physik A 314, 239–249 (1983). https://doi.org/10.1007/BF01879883

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  • DOI: https://doi.org/10.1007/BF01879883

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